Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 601 - 650 out of 10,906

Document Document Title
WO2003034576A3
A circuit for increasing the voltage/current level of a signal to drive a power transistor from a low voltage input. The gate drive circuit comprises a voltage multiplier for increasing the voltage level of a low voltage input signal, a ...  
WO/2004/044578A1
The invention provides a separating vessel (10) suitable for use in the treatment of a mineral sample wherein a molten slag (11) is separated from a molten collector material (12) comprising a container defining an interior cavity (13) f...  
WO/2004/035846A1
A low pollution process for extracting arsenic in vacuum, including: heat and keep the smelting chamber to a temperature of 100-300 °C under the reduced pressure lower than 50 Pa to remove the water vapor and some dust; then heat and ke...  
WO/2004/035873A1
An electrochemical cell for electrochemical reduction of a metal oxide in a solid state is disclosed. The cell includes a molten electrolyte (14), an anode (10) formed from carbon in contact with the electrolyte, a cathode (20) formed at...  
WO/2004/033760A3
An electrochemical cell for electrochemical reduction of a metal oxide, such as titania, in a solid state, is disclosed. The cell includes (a) a molten electrolyte (18), (b) a cathode (20) formed at least in part from the metal oxide in ...  
WO/2004/028655A2
A method of separating metal particulates form a slurry of liquid metal and metal particulates and salt particulates by filtering the slurry to form a cake of metal and salt particulates with some liquid metal. The cake is broken and liq...  
WO/2004/029307A1
The invention relates to a rotor, a device, and a method for introducing fluids into a molten bath. Molten baths are often degassed by introducing a liquid. In known trough degassers, rotors are arranged in the flowing melt and are used ...  
WO/2004/029332A2
A method for purifying metal M1 particles manufactured by an electrochemical reduction process, the method comprising the steps of introducing the metal M1 particles into a heat source (13) at a temperature substantially equal to or high...  
WO/2004/029308A1
The invention relates to rear-metal metallurgy and can be used for efficient osmium extraction from copper production waste material. The inventive method consists in pre-distilling organic components in a reducing medium from initial ra...  
WO2003034391A3
A method and system for controlling a voltage used for precharging current-driven elements in a matrix, and a method of manufacturing a device to perform this function. Elements are driven during successive scan cycles, each having a pre...  
WO/2004/020679A1
The invention relates to a device (8) which is used to inject a treatment gas into a molten metal contained in a tank (1) and which is designed to be fixed in one of the walls of said tank. The inventive device comprises at least one inj...  
WO2003064716A3
Filters (18) for filtering molten metals and alloys and method to remove contaminants. Filters (18) may include preferred imaging agents such as tungsten and gandolium, useful for N-ray radiography, X-ray analysis and neutron activation.  
WO/2004/013361A1
A dry method of recovering a platinum group element, comprising charging a substance containing platinum group element to be treated and a copper source material containing copper oxide together with a flux component and a reducing agent...  
WO/2004/013360A1
A salt furnace is receivable within a vessel which contains molten magnesium/magnesium alloy. The salt furnace comprises a body for isolating a salt melt within the salt furnace from molten magnesium/magnesium alloy in the vessel and thr...  
WO2003033749A3
A method and apparatus for establishing and applying a voltage to precharge current-driven elements in a matrix. During ordinary scan cycles, a conduction voltage is sensed while the elements conduct a selected current. One or more such ...  
WO/2004/009857A1
A method of separating components from a metal based composite, the method including the steps of increasing the size of a component to be separated and separating the increased sized component from the other components of the composite.  
WO/2004/005559A1
The invention relates to a method for fractional crystallisation of an at most partially solidified molten metal, in which a layer of at most partially solidified molten metal having an upper surface und a lower surface is divided into a...  
WO/2004/005558A1
The invention relates to a method for fractional crystallisation of an at most partially solidified molten metal. According to the invention a layer of at most partially solidified molten metal to be crystallised is cooled by a layer of ...  
WO2003034388A3
A method and apparatus for predicting current boost levels and applying them to precharge current-driven elements in a matrix, and a method of manufacturing devices for this purpose. Elements are driven during successive scan cycles, eac...  
WO/2004/001078A1
Method and device for purifying a stream of molten metal. A conical chamber that acts a cyclone has been defined in a block of refractory material. The stream to be purified is introduced between the two ends of the conical chamber havin...  
WO/2003/106908A1
A flow inducement or stirring apparatus (500) includes electromagnetic induction apparatus in the form of a generally rectangular box (501) connected to an inclined end wall (502) of a cradle or port (503) of the apparatus 500, being gen...  
WO/2003/106009A1
The invention concerns an electromagnetic device for interfacial fusion and stirring of diphasic systems, in particular for accelerating metallurgical of pyrochemical processes. Said device comprises for example a crucible (2, 28), desig...  
WO2003089676A3
The present invention relates to new compositions of metals and alloys, with variable de gree of carbon (super-)saturation, and methods of making such compositions. The new compositions of matter exhibit long-range ordering and unique el...  
WO/2003/104502A1
A treatment apparatus (10) includes a liquid reactant metal containment vessel (11) for containing a first liquid reactant metal and isolating the reactant metal from the atmosphere. A release chamber (14) is adapted to receive the first...  
WO2003034385A3
A current driving circuit (264) for use with a display of light emitting elements arranged in rows and columns. The current driving circuit (264) is configured to control the exposure time of column current sources (270) based on the row...  
WO2003034384A3
An Organic light emitting diode (OLED)/polymer OLED (PLED) displays and their operation with a precharge latency. Particularly, precharging operation of such a display device with a precharge switch latency. According to the operation, a...  
WO/2003/102254A1
A method by which tantalum compounds and niobium compounds dissolved in water such as a liquid detergent are insolubilized and recovered. An aqueous solution containing tantalum compounds and/or niobium compounds dissolved therein is reg...  
WO2003057930A8
A method for filtering molten aluminum containing suspended particles using an improved filtration media, the method comprising the steps of providing a source of molten aluminum and providing media having a coating thereon, the coating ...  
WO/2003/095686A1
The invention relates to a device (1) for treating a liquid metal flow. The inventive device comprises a treating ladle (2) consisting of: means of connecting (11, 12, 13, 14) to at least one liquid metal feed chute (15) and to at least ...  
WO2003034387A3
An apparatus for generating and providing a stable reference voltage to a boost regulator that generates a drive voltage for a current source in e.g. an OLED or PLED display device. The apparatus comprises a clamping circuit that is conf...  
WO2002058863A8
A bottom heated holder furnace (10) for containing a supply of molten metal includes a storage vessel (20) having sidewalls (22) and a bottom wall (24) defining a molten metal receiving chamber (26). A furnace insulating layer (32) lines...  
WO/2003/091461A1
A method of introducing a solid particulate reagent into a bath of metallurgical liquid comprises a step of introducing a solid particulate reagent into a main supersonic gas jet. The main supersonic gas jet is directed at the surface of...  
WO/2003/089676A2
The present invention relates to new compositions of metals and alloys, with variable de gree of carbon (super-)saturation, and methods of making such compositions. The new compositions of matter exhibit long-range ordering and unique el...  
WO/2003/089862A1
The invention relates to electric-arc plasma reactors for producing the melt of refractory, metallic and non-metallic materials and sublimates which have a high viscosity degree and can be used for the cement and chemical industries and ...  
WO2003034386A3
A method and system for controlling a voltage to precharge current-driven elements in a matrix, and a method of manufacturing apparatus therefor. Current is delivered to a matrix connection during a conduction period so that an enabled e...  
WO/2003/076692A1
An electrolytic cell for reducing a metal oxide, such as titania, in a solid state is disclosed. The electrolytic cell includes an anode formed from carbon and a cathode formed at least in part from the metal oxide. The electrolytic cell...  
WO2002058862A3
The melter furnace includes a heating chamber (16), a pump chamber (18), a degassing chamber (20), and a filter chamber (22). The pump chamber 818) is located adjacent the heating chamber (16) and houses a molten metal pump (30). The deg...  
WO/2003/074215A1
Th invention relates to foundry engineering, more specifically to methods and devices for electroslag surfacing of composite rolls with molten metal and can be used for producing and repairing rollers of various shapes and sizes, rolls a...  
WO/2003/072835A1
Methods and apparatuses for separating metal values, such as nickel and nickel compounds, from mineral ores, including lateritic ores are disclosed. The method includes providing a mixture of particles (e.g., crushed and sized ore) that ...  
WO2002022900A3
An apparatus is provided for the treatment of molten metal, e.g. aluminum, with a particulate treatment agent and a gas. This includes a vessel for holding molten metal, a rotary device for breaking up particulate treatment agent and gas...  
WO2003034383A3
A method and apparatus for adapting and applying current boost levels to precharge current-driven elements in a matrix. Elements are driven during successive scan cycles, each having a precharge period and an exposure period. One or more...  
WO/2003/066914A1
A high−purity spongy titanium material containing less amounts of oxygen and metal elements is economically produced. The vacuum separation time t in a vacuum separation step is t = tO &plus 15 to &plus 35 hour where tO is the time fro...  
WO/2003/064716A2
Filters (18) for filtering molten metals and alloys and method to remove contaminants. Filters (18) may include preferred imaging agents such as tungsten and gandolium, useful for N-ray radiography, X-ray analysis and neutron activation.  
WO/2003/063997A1
The invention relates to a method and apparatus for processing a suspension. According to the invention, a suspension is led into a washing column in which at least one filter element is present, so that near the filtering element, a pac...  
WO2003048399A3
A solid material (M1X) (6) comprising a solid solution of a non-metal species (X) in a metal or semi-metal (M1) or a compound between the non-metal species and the metal or semi-metal is immersed in a molten salt (M2Y) (4). A cathodic po...  
WO2003033749A8
A method and apparatus for establishing and applying a voltage to precharge current-driven elements in a matrix. During ordinary scan cycles, a conduction voltage is sensed while the elements conduct a selected current. One or more such ...  
WO2003033097A3
The present invention relates to the use of a high intensity, in-line rotor-stator apparatus to produce fine particles via antisolvent, reactive, salting out or rapid cooling precipitation and crystallization.  
WO/2003/057930A1
A method for filtering molten aluminum containing suspended particles using an improved filtration media, the method comprising the steps of providing a source of molten aluminum and providing media having a coating thereon, the coating ...  
WO2003035917A3
A method, that enables the processing and recycling of magnesium-containing scrap, primarily the highly flammable scrap with large surface-to-volume ratio, (clips, flashing, turnings, chips), by way of melting, whilst maintaining a suita...  
WO/2003/056044A1
The invention concerns an alumnium melting method, which consists in introducing solid aluminium into a furnace (2), melting the aluminium to form an aluminium bath (4), detecting variations in carbon monoxide (CO) and/or hydrogen (H2) c...  

Matches 601 - 650 out of 10,906